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For most cmpds of the main group elements the lone pairs are of equal importance as bond pairs in determining structure hence the basis of VSEPR theory. The lone pairs are said to be stereochemically active. But for some higher-coordination main-group cmpds the lone pair becomes stereochemically inactive. For example, the [SeCl6]2-, [SeBr6]2-, [TeCl6]2-, and [TeBr6]2- ions all have regular octahedral structures in the solid state. But According to VSEPR these AX6E ions should not have a regular octahedral structure.
For transition metal cmplxs and organometallic cmpds the d e-s are completely stereochemically inactive: d AOs point between the ligands (e.g., oct [M(H2O)6]^n+ ions) or are involved in π bonding. Cr(CO)6 (octahedral), Fe(CO)5 (trigonal bipyramidal), Ni(CO)4 (tetrahedral), but all have 18 e-s: geometry dictated by ligands. ;)
What else can I help you with?
How do electrons flow in cathodic protection?
In cathodic protection systems, electrons flow from a more active metal (anode) through an external circuit to the structure being protected (cathode), providing a protective current that helps prevent corrosion. This flow of electrons results in the cathodic polarization of the structure, thereby reducing the likelihood of corrosion.
Explain how a moving car can become positively active?
A moving car can become positively charged through processes like friction, which can cause the transfer of electrons between the car and another object. For example, when the car drives on the road, friction between the tires and the ground can result in the car gaining a positive charge if electrons are transferred from the road to the car.
Which subatomic particle determines reactivity?
Electrons are the subatomic particles that determine the reactivity of an element. The number of electrons in the outermost shell of an atom, known as valence electrons, determines how likely an atom is to form chemical bonds with other atoms.
What are the electrons in the outer shell?
The electrons in the outermost shell of an atom are called valence electrons. These electrons are involved in forming chemical bonds with other atoms to create molecules. The number of valence electrons influences the reactivity and chemical properties of an element.
The electrons that occupy the outermost filled shell are called?
Outer energy level electrons, or valence electron.
When non metals are most active they can do what?
easily gain electrons
How checially active an element is depends on the losing gaining or sharing of what?
Electrons
What stops the flow of electrons in a circuit?
all passive elements which absorb energy from active elements can control the flow of electrons
What particles play the most active role in chemical bonding?
I think it's electrons.
Why noble gasses are not active?
Noble gases are not active because of their outer shells. The outer shells of these gases are full of 8 valence electrons, which make them stable and inert.
Is magnesium active or inactive?
Magnesium is an active element. It is a highly reactive alkali earth metal that readily forms compounds with other elements due to its tendency to lose electrons and achieve a stable electron configuration.
If the outermost electron shell of an element is not filled with electrons to its maxium capacity the element is not chemically active?
false
What do active metals and halogens have in common?
Active metals and halogens both have a strong tendency to form ions by gaining or losing electrons in reactions. Active metals readily lose electrons to form positive ions, while halogens readily gain electrons to form negative ions. Both groups of elements exhibit high reactivity due to their desire to achieve a stable electron configuration.
What are examples of active nonmetals?
Examples of active nonmetals include oxygen, fluorine, chlorine, and bromine. These elements readily form compounds and react with other elements to gain electrons.
Can coenzymes facilitate metabolic reactions by combining with enzymes at their active sites?
Yes, coenzymes can facilitate metabolic reactions by binding to enzymes at their active sites and assisting in the transfer of functional groups or electrons between substrates. They often act as carriers of chemical groups or electrons, helping the enzyme's active site perform its specific function in the metabolic pathway.
Explain how you know that it is an electric field not electrons that moves rapidly through a circuit?
Electrons in an active circuit either drift slowly, or just jiggle back and forth in one place.
Why are alkali metals active?
because they have outer electrons than can merge with other elements. all elements want to have full outer electron shells, and they only have a few outer electrons.
